add GCP credentials deployment

[orouz]

• [x] adds a Deployment Manager template to and a script to deploy it
• [ ] adds a CI test to verify deployment of service account is useable

[mergify[bot]]

This pull request does not have a backport label. Could you fix it @orouz? 🙏 To fixup this pull request, you need to add the backport labels for the needed branches, such as:

• backport-v./d./d./d is the label to automatically backport to the 8./d branch. /d is the digit NOTE: backport-skip has been added to this pull request.

[github-actions[bot]]

:bar_chart: Allure Report - :green_heart: No failures were reported.

Result	Count
🟥 Failed	0
🟩 Passed	359
⬜ Skipped	33

[mergify[bot]]

This pull request is now in conflicts. Could you fix it? 🙏 To fixup this pull request, you can check out it locally. See documentation: https://help.github.com/articles/checking-out-pull-requests-locally/

git fetch upstream
git checkout -b gcp_agentless_creds upstream/gcp_agentless_creds
git merge upstream/main
git push upstream gcp_agentless_creds

[orouz]

@orouz Workflow and tests are approved. One more question: did you test the environment destruction when the service account is used?

yes, deletion of GCP env works